Hydrocarbon-burner.



F. W. LEHMAN.

HYDROOABBON BURNER.

APPLICATION IILED OCT. 8, 1910.

Patented Oct. 10, 1911.

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F. W. LEHMAN.

HYDROGARBON BURNER.

APPLICATION FILED OUT. 8, 1910.

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FREDERICK W. LEHMAN, 0F MINNEAPOLIS, MINNESOTA.

HYDROCARBON-BURNER.

Specification of Letters Patent.

Patented Oct. 10, 1911.

Application filed October 8, 1910. Serial No. 586,009.

To all whom it may concern:

Be it known that I, FREDERICK 1V. LEI-I- MAN, a citizen of the UnitedStates, residing at Minneapolis, in the county of Hennepin, State ofMinnesota, have invented certain new and useful Improvements inHydrocarbon-Burners; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to hydrocarbon burners.

The object of the invention resides in the provision of a device ofcharacter named which may be easily applied to and detached from stoves,furnaces, boilers and the like whereby same may be heated through themedium of liquid fuel.

A further object of the invention resides in the product-ion of ahydrocarbon burner which will be simple in construction, efficient inuse and which can be manufactured at a small cost.

With the above and other objects in view, the invention consists in thedetails of construction and the arrangement and combination of parts tobe hereinafter more fully described and particularly pointed out in theappended claim.

In describing the invention in detail reference will be had to theaccompanying drawings wherein like characters of reference denotecorresponding parts in the several views, and in which- Figure 1 is aside elevation of a hydrocarbon burner constructed in accordance withthe invention; Fig. 2, a plan view of the burner; Fig. 3, a section onthe line 3 3 of Fig. 2, and Fig. 4, a vertical section'of the lower endof an ordinary drum stove showing the burner associated therewith.

Referring to the drawings the burner is shown as formed of a casting Awhich in cludes a hollow oval upper portion 10 the interior 11 of whichconstitutes the vaporizing chamber of the burner. The top wall of theportion 10 is provided with an oil inlet opening 12 through which oil isconveyed to the vaporizing chamber 11 by means of a supply pipe 13, oneend of which is mounted in the opening 12. The casting A furtherincludes a substantially tubular portion 14 connected to the portion 10by means of a bridge 15. The upper side of one end of the portion 14 isdisposed in spaced relation to the lower wall of the portion 10 and theinterior of the tubular portion 14 is connected to the interior of theportion 10 by means of a passage 16 extending through the bridge 15 andthrough a plug 17 threaded in one end of the tubular portion 14. The endof the tubular portion 14 which is disposed farthest from the bridge 15is bent upwardly toward the portion 10 and extends through the top andbottom walls of the latter, whereby one end of the tubular portion 14opens through the top wall of the portion 10. The upper side of the wallof the portion 14 is provided with an opening 18 which is locatedsubstantially in vertical alinement with the oil inlet opening 12 for apurpose that will presently appear. The interior of the portion 14constitutes the mixing chamber of the burner and a flame spreader 19 ismounted on the top of the portion 10 and overlies the upper end of themixing chamber. This flame spreader 19 is of substantially cylindricalformation and has its upper end closed. The lower end of the spreader 19is provided with spaced legs 20 to permit the entrance of air into theinterior of the spreader at the bottom thereof. The cylindrical wall ofthe spreader 19 is slotted transversely as at 21 and through this slotthe flame is adapted to issue during the use of the burner. The passage16 is controlled by means of a needle valve 22 mounted in the plug 17and just forward of the inner end of this plug 17 an opening 23 isformed in the lower side of wall of the portion 14. The purpose of thisopening is to permit the entrance of air into the interior of theportion 14 to be mixed with the vapor also entering the interior of theportion 14 by way of the passage 16 from the vaporizing chamber.

During the use of the burner not only will the flame issuing from thespreader 19 but a small portion thereof will also escape through theopening 18 in the portion 14 and the flame thus issuing through theopening 18 will contact with the lower wall of the portion 10 directlybeneath oil inlet opening 12 and accelerate the vaporizing of the fuelin the chamber 11. A plate 24 is mounted on the supply pipe 13 and isalso pierced by the needle valve 22. The purpose of this plate is toclose the usual stove or furnace door opening when the burner isinserted in the stove or furnace. Secured to the bottom of the casting Aby means of screws 25 and 26 is a drip pan 27 which not only serves tocatch any waste from the burner but also renders the latter more stable.

What is claimed is: y

In a hydrocarbon burner, the combination of a vaporizing chamberprovided with an oil inlet in its stop wall, a mixing chamber incommunication with said vaporizing chamber having the upper side of oneend of its wall spaced from the lower wall of the vaporizing chamber andprovided with an opening directly beneath the inlet opening in the topwall of the Va orizing chamber, and the other end of its wa l benttoward the vaporizing chamber and extended through the top and bottomWalls of the latter.

In testimony whereof, I afiix my signature, in presence of twowitnesses.

FREDERICK W. LEHMAN. Witnesses: A. F. GALE. GLENN D. THAYER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. 0.

